/*
 * TouchGraph LLC. Apache-Style Software License
 *
 *
 * Copyright (c) 2002 Alexander Shapiro. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by
 *        TouchGraph LLC (http://www.touchgraph.com/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "TouchGraph" or "TouchGraph LLC" must not be used to endorse
 *    or promote products derived from this software without prior written
 *    permission.  For written permission, please contact
 *    alex@touchgraph.com
 *
 * 5. Products derived from this software may not be called "TouchGraph",
 *    nor may "TouchGraph" appear in their name, without prior written
 *    permission of alex@touchgraph.com.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL TOUCHGRAPH OR ITS CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 */

package geovista.touchgraph.interaction;

import java.awt.Adjustable;
import java.awt.event.AdjustmentEvent;
import java.awt.event.AdjustmentListener;

import javax.swing.JScrollBar;

import geovista.touchgraph.GraphListener;
import geovista.touchgraph.Node;
import geovista.touchgraph.TGPanel;

/**
 * LocalityScroll.
 * 
 * @author Alexander Shapiro
 * 
 */
public class LocalityScroll implements GraphListener {

	transient private final JScrollBar localitySB;

	transient private final TGPanel tgPanel;

	public LocalityScroll(TGPanel tgp) {
		tgPanel = tgp;
		localitySB = new JScrollBar(Adjustable.HORIZONTAL, 2, 1, 0, 6);
		localitySB.setBlockIncrement(1);
		localitySB.setUnitIncrement(1);
		localitySB.addAdjustmentListener(new localityAdjustmentListener());
		tgPanel.addGraphListener(this);
	}

	public JScrollBar getLocalitySB() {
		return localitySB;
	}

	public int getRadius() {
		int locVal = localitySB.getValue();
		if (locVal == 5) {
			return 50;
		}
		return locVal;
	}

	public void graphMoved() {
	} // From GraphListener interface

	public void graphReset() {
		localitySB.setValue(2);
	} // From GraphListener interface

	private class localityAdjustmentListener implements AdjustmentListener {
		public void adjustmentValueChanged(AdjustmentEvent e) {
			Node select = tgPanel.getSelect();
			if (select != null) {
				tgPanel.setLocale(select, getRadius());
			}
		}
	}

} // end com.touchgraph.graphlayout.interaction.LocalityScroll
